# Largest and Smallest Element of an Array in C

Calculating largest and smallest element in C is straightforward. All you have to do is scan through the array one element at a time and compare it with current largest or smallest value. Since you scan every element of array, there will be n (number of elements in the array) comparisons. Therefore the running time of this algorithm is $\Theta(n)$.

Calculation of Largest Element

1 2 3 4 5 6 7 8 9 | int get_largest(int a[], int n) { int i, largest = 0; for (i = 0; i < n; i++) { if (a[i] > largest) { largest = a[i]; } } return largest; } |

Calculation of Smallest Element

1 2 3 4 5 6 7 8 9 | int get_smallest(int a[], int n) { int i, smallest = 2147483647; for (i = 0; i < n; i++) { if (a[i] < smallest) { smallest = a[i]; } } return smallest; } |

This code is also available in GitHub.